v3.26.3
Accumulated Other Comprehensive Income (Loss) - Reclassifications out of Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Amortization of unrealized gains and losses $ 2,032 $ 2,079 $ 6,374 $ 6,112
Tax benefit (expense) (6,284) (189) (17,066) (9,629)
Realized net gain (loss) on sale of securities 0 (24,395) 0 (24,949)
Total reclassifications for the period, net of tax (2,105) (19,829) (6,186) (20,917)
Unrealized gains (losses)        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Reclassified from accumulated other comprehensive income (2,032) (26,474) (6,374) (31,061)
Realized net gain (loss) on interest rate swap derivatives        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Reclassified from accumulated other comprehensive income 34 1,988 545 6,427
Net actuarial loss        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Reclassified from accumulated other comprehensive income [1] (668) (614) (2,003) (1,844)
Amortization of pension plan        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Reclassified from accumulated other comprehensive income (668) (614) (2,003) (1,844)
Tax (expense) benefit 141 128 421 387
Total reclassifications for the period, net of tax (527) (486) (1,582) (1,457)
Unrealized gains and losses on securities transferred | Reclassification out of accumulated other comprehensive income | Unrealized gains (losses)        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Amortization of unrealized gains and losses [2] (2,032) (2,079) (6,374) (6,112)
Tax benefit (expense) 427 437 1,339 1,284
Net of tax (1,605) (1,642) (5,035) (4,828)
Unrealized gains and losses on available for sale securities | Reclassification out of accumulated other comprehensive income | Unrealized gains (losses)        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Tax benefit (expense) 0 5,123 0 5,239
Net of tax 0 (19,272) 0 (19,710)
Realized net gain (loss) on sale of securities [3] 0 (24,395) 0 (24,949)
Interest rate swap derivatives | Reclassification out of accumulated other comprehensive income | Realized net gain (loss) on interest rate swap derivatives        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Tax benefit (expense) (7) (417) (114) (1,349)
Net of tax 27 1,571 431 5,078
Realized net (loss) gain on interest rate swap derivatives [4] $ 34 $ 1,988 $ 545 $ 6,427
[1] These AOCI components are included in the computation of net periodic pension cost (income) presented in “Note 8 – Employee Benefit Plans.”
[2] Included in interest income on the consolidated statements of income.
[3] Listed as net gain (loss) on sale of securities AFS on the consolidated statements of income.
[4] Included in interest expense for FHLB borrowings, other borrowings and deposits on the consolidated statements of income.